在linux開放6379埠時，提示FirewallD is not running，發現防火牆沒有開啟。

問題發現

[root@VM_0_9_centos redis-4.0.8]#  firewall-cmd --zone=public --add-port=6379/tcp --permanent
FirewallD is not running

檢視防火牆狀態

[root@VM_0_9_centos redis-4.0.8]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (
 
/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

發現當前是dead狀態，即防火牆未開啟。

開啟防火牆

[root@VM_0_9_centos redis-4.0.8]# systemctl start firewalld

沒有任何提示，表示開啟成功。

檢查防火牆狀態

[root@VM_0_9_centos redis-4.0.8]# systemctl status firewalld
● firewalld.service 
 
- firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: active (running) since Tue 2020-10-27 16:28:08 CST; 11s ago
     Docs: man:firewalld(1)
 Main PID: 32232 (firewalld)
    Tasks: 2
   Memory: 32.0M
   CGroup: /system.slice/firewalld.service
           └─
 
32232 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

Oct 27 16:28:08 VM_0_9_centos systemd[1]: Starting firewalld - dynamic firewall daemon...
Oct 27 16:28:08 VM_0_9_centos systemd[1]: Started firewalld - dynamic firewall daemon.

防火牆開啟成功。

關閉防火牆

[root@VM_0_9_centos redis-4.0.8]# systemctl stop firewalld

再次開放6379埠

[root@VM_0_9_centos redis-4.0.8]# firewall-cmd --zone=public --add-port=6379/tcp --permanent
success

重啟防火牆使配置即使生效

[root@VM_0_9_centos redis-4.0.8]# systemctl restart firewalld

檢視系統所開放的埠

[root@VM_0_9_centos redis-4.0.8]# firewall-cmd --zone=public --list-ports
6379/tcp

結束！